Locating Decimal Fractions

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Achievement Objectives
NA3-4: Know how many tenths, tens, hundreds, and thousands are in whole numbers.
Specific Learning Outcomes

Read decimals with tenths, count forwards and backwards in tenths, order decimals with tenths.

Description of Mathematics

Number Framework Stage 6

Required Resource Materials
Number Line on a Tape (Material Master 4-23)

A roll of adding machine paper, or number line on paved area, at least 15 metres lon

Pegs

Activity

Preparation for Activity


Along an edge of the paper roll, mark each metre and label it 0, 1, 2, 3, ... Also mark every tenth of a metre (10 cm). Do not label the tenths. The tape should be at least 15 metres long.

 

 

 

 

locate.

 

Note. You might use a standard tape measure, but you will need to cover all numbers except metres and all marks except tenths of metres with paper whitener.

 

Activity

Using cards from Material Master 4–23, students working in pairs mark lengths representing one decimal place numbers with pegs, for example, 12.5, then two decimal numbers, for example 13.53, then three decimal place numbers, for example 1.666.

 

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Level Three